A free program for Android, by OsmTeam.

This is an improved version of the Osm player with support for 4K videos.

You can now choose any of the four video output options. 

You can also choose any of the four audio output options. The default option is stereo, but you can also choose mono or dual audio.

You can now add and remove subtitles from the movie. You can also change the movie and subtitle languages.

You can now use the audio equalizer and bass booster. You can also set the audio volume to a fixed value.

You can now set the video playback speed to a fixed value.

You can now add a list of your favorite movies.